SAT考试Essay作文素材分享(二) Informational social influence Microscopically, informational social influence occurs when one turns to the members of one&aposs group to obtain accurate information. A person is most likely to use informational social influence in certain situations: when a situation is ambiguous, people become uncertain about what to do and they are more likely to depend on others for the answer; and during a crisis when immediate action is necessary, in spite of panic. Looking to other people can help ease fears, but unfortunately they are not always right. The more knowledgeable a person is, the more valuable they are as a resource. Thus people often turn to experts for help. But once again people must be carul, as experts can make mistakes too. Informational social influence often results in internalization or private acceptance, where a person genuinely believes that the information is right. Informational social influence was first documented in Muzafer Sherif&aposs autokinetic experiment.[3] He was interested in how many people change their opinions to bring them in line with the opinion of a group. Participants were placed in a dark room and asked to stare at a small dot of light 15 feet away. They were then asked to estimate the amount it moved. The trick was there was no movement, it was caused by a visual illusion known as the autokinetic fect. Every person perceived different amounts of movement. Over time, the same estimate was agreed on and others conformed to it. Sherif suggested this was a simulation for how social norms develop in a society, providing a common frame of rerence for people. Subsequent experiments were based on more realistic situations. In an eyewitness identification task, participants were shown a suspect individually and then in a lineup of other suspects. They were given one second to identify him, making it a difficult task. One group was told that their input was very important and would be used by the legal community. To the other it was simply a trial. Being more motivated to get the right answer increased the tendency to conform. Those who wanted to be most accurate conformed 51% of the time as opposed to 35% in the other group.[4] Economists have suggested that fads and trends in society form as the result of individuals making rational choices based on information received from others. These informational cascades form quickly as people decide to ignore their internal signals and go along with what other people are doing.[5] Cascades are presumed fragile, because people are aware that they are based on limited information. This is why fads often end as quickly as they begin.

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